---
title: NSSnapshotEventType
framework: coredata
role: symbol
role_heading: Structure
path: coredata/nssnapshoteventtype
---

# NSSnapshotEventType

Constants that specify the reason the managed object may need to reinitialize its values.

## Declaration

```swift
struct NSSnapshotEventType
```

## Topics

### Event Types

- [undoInsertion](coredata/nssnapshoteventtype/undoinsertion.md)
- [undoDeletion](coredata/nssnapshoteventtype/undodeletion.md)
- [undoUpdate](coredata/nssnapshoteventtype/undoupdate.md)
- [rollback](coredata/nssnapshoteventtype/rollback.md)
- [refresh](coredata/nssnapshoteventtype/refresh.md)
- [mergePolicy](coredata/nssnapshoteventtype/mergepolicy.md)

### Initializers

- [init(rawValue:)](coredata/nssnapshoteventtype/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [ExpressibleByArrayLiteral](swift/expressiblebyarrayliteral.md)
- [OptionSet](swift/optionset.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [SetAlgebra](swift/setalgebra.md)